The memory component of GWs from compact binary coalescences (CBCs) slowly accumulates during the inspiral and significantly jumps during the merger phase of the evolution when spacetime curvature is highest. This adds a late-time low frequency component to the waveforms of CBC systems. This occurs at the point in the signal where the frequencies go beyond the sensitive range of current generation ground-based detectors. This low frequency component has been used to look for sources that emit GWs at very high frequencies [1]}, for example very light BBH mergers [2]}, thus providing a creative way to widen the parameter space of GW searches.
In this context, the utility of memory for detection and interpretation of sources can become significant when the purely oscillatory part of the signal extends to such high frequencies that the
detectors become less sensitive. Tidal disruption of neutron stars in NSBH systems is likely to happen at a few kHz and therefore beyond the sensitive spot of the detectors [3]}, [4]}. We show that in this case the memory can provide crucial information about the nature of the system.
